Just wondering is there anything "wrong" with pulling from the floor week in and week out?

Thoughts.....

No, not if you are making progress. Progress trumps everything and simplicity should be ridden until it fails.

I train variations because I deadlift 2x a week and it helps with recovery. Floor pulling is hardest for me. I trained strictly floor for 4 years, with some assistance work after.

With all this said, if someone is floor pulling over 90% week in and week out I think things can get hairy and I advise them to change. I am not a fan of over 90% work on deadlifts. Too much risk, little reward.